package com.util;

import org.apache.commons.lang3.StringUtils;

import javax.servlet.http.HttpServletRequest;
import java.util.UUID;

public class ConstantUtil {
    public final  static  String loginSession ="loginSession";


    public static String createWithdrawalNo(){
        String uuid = UUID.randomUUID().toString().replaceAll("-", "");
        return "W"+uuid;
    }


    public static String createDepositNo(){
        String uuid = UUID.randomUUID().toString().replaceAll("-", "");
        return "D"+uuid;
    }



    public static String getIpAddr(HttpServletRequest request){
        String ip = request.getHeader("X-Real-IP");
        if (!StringUtils.isBlank(ip) && !"unknown".equalsIgnoreCase(ip)) {
            return ip;
        }
        ip = request.getHeader("X-Forwarded-For");
        if (!StringUtils.isBlank(ip) && !"unknown".equalsIgnoreCase(ip)) {
// 多次反向代理后会有多个IP值，第一个为真实IP。
            int index = ip.indexOf(',');
            if (index != -1) {
                return ip.substring(0, index);
            } else {
                return ip;
            }
        } else {
            return request.getRemoteAddr();
        }
    }

}
